I thought it might help if I posted a few tips to help you new moderators with Prop hunt ghosting techniques.
GHOSTING = When two or more players use each other to cheat the game. IE: Prop dead, prop finds other props for the hunter to kill.
First off. Not all are ghosting, knowing that it is against the rules. If they have no other warnings on their name, always tell them to stop first.
Tell signs.
1) Unusual amount of kills in a short time (Not at the start of the game,
afk'rs)
2) Stopping, then moving to an area where there is a prop.
Usually a sign of taking instructions.
3) A hunter standing in an area and just looking around. Again a sign that they can't find the prop.
4) Some will wait until the last few seconds. They will go away from a prop but keep coming back to try to put off the scent of a moderator/admin. Keep a close eye on this one, they won't go far so they wont miss the kill if someone else find the prop.
5) Ghosters don't just kill props. they hide each other. Look out for hunters hiding the prop.
6) You have worked out a couple might be ghosting, watch for the prop death, then watch the hunter kills.
Always make sure the Ghosters are in different teams. Some may look like they are ghosting with a friend online, and it turns out they are on the same team and are just good at the game, so always check. Also make sure the prop is dead before watching for hunter action.
Hope this helps.